Dialogue Help

[Handsome Squidward]

I am trying to create a Saadia follower that does not require bat follower files or commands. I plan to add her to the follower factions in the dialogue tree after her quest if she has a good disposition to the player (which hopefully becomes good after finishing Saadia's quest and eliminating the assassins).

 

I have no idea how this is done. Any help on how to do this or at least pointing me in the right direction is greatly appreciated.

 

I also would need to know the essential elements of being a follower such as the faction and what not. This is so I could have no incompatibilities with mods like UFO.